Riveting-machine.



E. SMITH.

RIVETING MACHINE.

' APPLIGATION FILED MAR.22, 1911. 1992732821 l v Patented May 21, 1912.

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UNITED vsra'ifns PATENT vcarton.'

RlVET'ING-MACHINE.

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(i n Be 1t known that I, EDWIN SMrrrn-a citizen of the United States, esiding at Viau Ville, Mont-real, in the Province' of Quebec and Dominion of Canada, have invented new and useful Improvements in Riveting- Machines, of which the following isa specification.

In boiler factories and in the construction of work requiring the parts to be connected by rivets or stay bolts'the upsetting of the ends of theI rivets, bolts or like parts has usually been accomplished by hand and is both laborious and costly. Pneumatic machines have been employed for accomplishing such work, but the jar'resultingfto the workman from the vibratio'n has precluded their universal adopt-ion or use to any very great extent. It is desirable to employ the pneumatic machine because of the rapidity with which the work is performed and at less labor to' the workman, but as stated these advantages are offset by the injury resulting from the excessive vibration which jars the operator and produces injurious results.

The presentinvention provides means for v absorbing the jar and shock incident to the vibration of a pneumatic tool when in operation so as to prevent injurious results to the workman `and `enablingl the pneumatic tool to be successfully use'd in work requiring riveting or the upsetting of stay bolts or like fastening` means.

In accordance with this invention the pneumatic tool has a yieldable mount, the

. latter preferably consisting of a pneumatic tail view, showing one manner of use of the invention. Fig'. 2 shows a different application. Fig. 3 is a central longitudinal section of the yield able or pneumatic mount for the tool'.

i (lorresponding and Alike parts-are referred specification of Letters Patent.

Patented May 21, v191,2.

Application led March 22, 1911. Serial No. 616,134.

t'oin the following description,- and indicated in all the views of the drawingspby the same reference characters.

The yieldable or pneumatic mount comprises a cylinder l and a piston 2 arranged to operate therein. A head 3 is provided at ithe inner end of the piston and is of suchconstruetion asto insure a close fit with the walls ofthe cylinder 1. The body of the piston is stout and nearly of a diameter corresponding with the bore ofthe cylinder so as to withstand the strain to which it is subjected when' Vin operation. operates through an end of the 'cylinder l and the projecting end has a `hand wheel l or like part secured thereto whereby the piston may be turned when the tool is in .operation. An opening 5 extends through the piston and piston head to admit of the passage of compressed air or other lnotivc lnedium to the tool.l which isattached directly to the piston. The outer end of the opening 5 is enlarged, as indicated at G, the enlarged portion of .the opening being internally threaded to make screwthread connection The piston f with the pneumatic tool 7 which is attached pressed air or motive medium. It is to be understood that the pipes 14 and l5 conne '.t.- ing the parts 8 and 10 with the lsource of supply of motive medium are provided pvith two-way valves 16 and 17 to admit of directing the motive medium into either endl of the cylinder according to. the required direction of movement of the piston. lhenE the motive medium is admitted into the cylinder through the opening 8 the pistdaris forced outward, thereby bringing thej pneumatic tool 7 into engagement A with the work. When the motive medium is admitted into the cylinder through the passagejfljofl he piston is forced inward, thereby carry nfgthe pneumatic tool away from the wofrj t Figs. 1 and 2 of the djrawingsshow two .pneumatic tools located -tpon opposite sides of the work so as to rivtt opposite ends of the same stay bolt at hie operation. ln Fig. llthe lower tool i. .fiupported upon the bed of the combustion c tambor of a boiler, whereas the upper tool 1s attached to an arm.

11 secured to an upright 12 clamped to the crown or upper portion of the boiler. I Fig. 2 a frame 13 of substantially U form is lprovided, said frame being arranged with its members extending upon opposite sides of the work and each supporting a pneumatic tool and the mount therefor. j

In operation the pneumatic tool 7 of any type, make or variety is lsecured to the piston vof the mount and 'after the parts have been properly positioned the valve 16 admitting compressed air to the opening 8 is opened and the compressed air entering the cylinder lforces the piston 2 upwardly or outwardly s the pneumatic tool away from tlie'work so that the parts may be adjusted to the next fastening.

From the foregoing description, taken in connection with the *accompanying drawings, the advantages of the construction and of the method of operation will be readily ap parent to those skilled in the art to which the invention appertains, and while ,I have Inv described the principle of operationof the invention, together With the device which I now consider to be the embodiment thereof, I desire to have it understood that the device shownis merely illustrative, and that suoli changes may be made when desired as are within the scope of the claim appended hereto.

'Having thus described the invention what is claimed as new, is

A pneumatic mount for a pneumatic riveting tool, the same comprising a cylinder havingl a passage formed in a lside in communication with one end of the cylinder and having valved connection with the source of air supply, a head closing the opposite end of the cylinder and having a passage formed therein which has valvedl connection with the source of air supply, a piston arranged to operate in the cylindei` and having an end portion projecting beyond an end of the cylinder, said piston having its inner end enlarged to form a-head and further provided `with an opening extending*therethrough, the outer end of the opening being enlarged to admit of connection of a pneumatic tool withV the projecting end of the piston, and a hand piece fitted to the projecting end of the piston.

In testimony whereof I affix my signature in presence of two witnesses.

EDWIN SMITH. Witnesses: l

CHARLES IsAAos, CHAs. F. DicKEnsoN. 

